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Related Experiment Videos

Pulmonary granulomas induced by BCG.

F C Au, B Webber, S A Rosenberg

    Cancer
    |June 1, 1978
    PubMed
    Summary

    Bacillus Calmette-Guérin (BCG) immunotherapy can cause granulomas in lungs and other organs. These BCG-induced granulomas may be misdiagnosed as metastatic osteosarcoma in patients undergoing treatment.

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    Area of Science:

    • Immunology
    • Oncology
    • Pathology

    Background:

    • Adjuvant immunotherapy with Bacillus Calmette-Guérin (BCG) is utilized in osteogenic sarcoma treatment.
    • The multiple-puncture technique is a common method for BCG administration.
    • Pulmonary nodules are a clinical concern in osteosarcoma patients.

    Purpose of the Study:

    • To investigate the occurrence of granulomas following BCG administration in osteogenic sarcoma patients.
    • To determine if BCG can induce granulomas at sites distant from the application.
    • To assess the potential for misdiagnosis of BCG-induced granulomas as metastatic disease.

    Main Methods:

    • Prospective, randomized study design.
    • Comparison of patients receiving BCG via multiple-puncture technique versus a control group.
    • Thoracotomy for diagnosis of pulmonary nodules in patients within three weeks of BCG injection.

    Main Results:

    • Pulmonary granulomas were observed in 4 out of 5 patients who received BCG and underwent thoracotomy.
    • No pulmonary granulomas were found in the control group (7 patients) except for a single foreign-body granuloma.
    • Granulomas were also identified in the bone marrow and a mediastinal lymph node in two BCG-treated patients.

    Conclusions:

    • Bacillus Calmette-Guérin (BCG) administered via multiple-puncture technique can induce granulomas at distant sites.
    • BCG can cause pulmonary granulomas that may mimic metastatic osteogenic sarcoma.
    • Clinical vigilance is required to differentiate BCG-induced granulomas from metastatic disease.

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